I bought these to use for bible journaling. I love how easy it is to write with them. I do find I write and draw with a heavy hand so if I go over it a couple of times it does have ghosting or bleeds through to the other side. They are really great on a good quality journal paper though with no problem going through.
These pens are amazing, there's no doubt about that! They underline and write so smoothly, they do NOT bleed through and have little to no ghosting, they do not smear or fade and the fine point black lets you to write very small in between sentences and remains clear. The only reason I did not care for them is they are much darker than what the color on the cap is. The yellow is like a faded green, pink is like a magenta, purple is pretty much black and the green is a dark green, similar to forest. The colors are very beautiful but just much darker than I was expecting. If you don't mind then there is no doubt you will love them. I returned them, ordered a 6 pack of .1 Pigma Micron blacks and got a 4 pack of Uchida LePen Neons with pink, yellow, blue and green. They are much brighter and what I wanted but again, it's personal preference. God Bless!
I really like these pens. I have a Bible with very thin pages, and while the ink does show through the pages, it's not because it bleeds through - it shows through exactly like the text on the backside of the page shows through. I got these for my brother-in-law, because we both like marking up our Bibles but the markups looking neat and colorful, and he loves them as well. The colors have enough difference to distinguish between them well, and they are bright and obvious without the bleeding I've found from most other highlighters/Bible markup pens. The 05 is great for underlining, and 001 is really helpful for writing notes in the margins, I've found.
I noticed when underlining, if I used a plastic bookmark to make the line straight it would smear as I moved the bookmark away, but the smearing has never as long as I use a paper bookmark or a sheet of paper, which I was glad to realize.
These are excellent for marking and underlining. These have been put to good use since I purchased them. I have used them in study book, notebook and Bible. I will be using these on everything - stamped cards, notes, letters, misc.